*EDIT* Now £31.12 using code flash25 (thanks to qbs for the heads up). That works out at £7.78 a litre...!
£33.19 including delivery using discount code MIDMONTH20. That works out at about £8.29 per litre.
Castrol Edge Titanium 0W-30 FST C3 Fully Synthetic Engine Oil - 4 Litre Advances in engine technology have led to increased power and efficiency, meaning engines work harder and under higher pressures than ever before.The only thing keeping metal engine components apart is the oil, so it needs to be strong and remain strong. Castrol EDGE is our strongest and most advanced range of engine oils. Its TITANIUM FST doubles its film strength, preventing oil film breakdown and reducing friction. Castrol EDGE with TITANIUM FST helping your engine perform at its best.